The TPSE226M035R0200: The 35 V rating gives a 46% derating margin on a 24 V rail — a standard practice to keep the applied voltage below 2/3 of the rated voltage for tantalum reliability. The 200 mOhm ESR limits the ripple current self-heating. For a 100 kHz buck converter output, the capacitor can handle roughly 1.2 A ripple current before the internal temperature rise exceeds the 125°C ceiling — the ESR value is the gatekeeper for the ripple budget.
Case size and board-fit checklist
The molded case gives a flat top for pick-and-place nozzle pick-up and a defined outline that matches the standard tantalum footprint — no surprises during reflow. Surface-mount assembly with tape-and-reel or cut-tape packaging options. The operating temperature range of -55°C to 125°C covers the full automotive underhood and industrial enclosure ambient — no derating needed for common 85°C environments.